30 C.F.R. § 57.22241

Current through October 31, 2024
Section 57.22241 - Advance face boreholes (I-C mines)
(a) Boreholes shall be drilled at least 25 feet in advance of a face whenever the work place is within-
(1) 50 feet of a surveyed abandoned mine or abandoned workings which cannot be inspected; or
(2) 200 feet of an unsurveyed abandoned mine or abandoned workings which cannot be inspected.
(b) Boreholes shall be drilled in such a manner to insure that the advancing face will not accidently break into an abandoned mine or abandoned working.

30 C.F.R. §57.22241